CN102042875A - White field instrument with adjustable color temperature - Google Patents
White field instrument with adjustable color temperature Download PDFInfo
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- CN102042875A CN102042875A CN 201010541145 CN201010541145A CN102042875A CN 102042875 A CN102042875 A CN 102042875A CN 201010541145 CN201010541145 CN 201010541145 CN 201010541145 A CN201010541145 A CN 201010541145A CN 102042875 A CN102042875 A CN 102042875A
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Abstract
The invention relates to a white field instrument with adjustable color temperature, which belongs to the technical field of colorimetry calibration. The invention provides the white field instrument with the adjustable color temperature to solve the technical problems. The technical scheme is that: the white field instrument comprises a liquid crystal display, a photoelectric detector, a digital indicator, a mode input module, a central processing module, a display screen driving module, a power module and a case; wherein the liquid crystal display is embedded on the front side of the case; the photoelectric detector is fixed on the upper right corner of the case; the digital indicator and the mode input module are embedded in the rectangular grooves on the upper part of the case respectively; the central processing module, the display screen driving module and the power module are fixed on the upper and lower surfaces in the case respectively; the central processing module is connected with the photoelectric detector, the digital indicator, the mode input module and the display screen driving module through a data line respectively; the liquid crystal display is connected with the display screen driving module through the data line and wires; and the central processing module and the display screen driving module are connected with the power module through the wires. The instrument has high integrated level and is convenient to use.
Description
Technical field
The invention belongs to white the adjustable instrument of a kind of colour temperature that relates in the colorimetry calibration technique field.
Background technology
Colorimetry is the science of research human eye to the color perception rule, and it is a professional technique of color, brightness etc. being measured according to the colorimetry principle that colorimetry is demarcated.
In colorimetry calibration technique field, demarcate as televisor, display being carried out white balance, need to use to have the benchmark of the standard white field of specific colour temperature as color calibration.At present, colorimetry is demarcated a main standard white plate or the white instrument of using and is produced standard white field.Blank mainly adopts white pressed by powder such as barium sulphate, magnesium oxide to form or adopt glazed ceramic, polishing opal glass etc., and workplace is the diffuse reflection surface of approximate lambert's body.Blank is used as the necessary supporting specific lighting source of standard white field, and uses according to certain condition of work, and operation is comparatively complicated.Because the difference of material and process conditions etc., parameters such as the blank colour temperature of production can not be identical, and colour temperature can not change, and must the block-by-block detection could guarantee value accurately and reliably.In addition, powder body material compacting blank, its physical strength is not high, easily broken the pollution, serviceable life is short, and only suitable transmission of quantity value generally need not be made the work standard.With respect to blank, a white instrument has stability height, colour temperature scalable, is easy to demarcate, use characteristics such as simple as the standard white field source, adjust color calibration career fields such as coating, printing and dyeing, the toning of paint industry for white that can be widely used in televisor, the display production run.
With the most approaching prior art of the present invention is to be published in the white instrument of a kind of adjustable color temperature that the 34th the 1st phase of volume of " photoelectric technology " magazine " the white instrument of computer adjustable color temperature " literary composition is proposed in 1993, as shown in Figure 1, comprise microcomputer 1, computer entry device 2, special software bag 3, polychrome graphics display adapter 4, VGA colour picture monitor 5.The principle of work of an instrument is by red in vain, green, primary colors light mixes required white of generation by certain brightness ratio, wherein, special software bag 3 is installed on the microcomputer 1, and it is red by white parameter generating of computer entry device 2 inputs according to the user, green, the quantification digital signal of blue three color light, microcomputer 1 is with red, green, the quantification digital data transmission of blue three color light is given polychrome graphics display adaptive 4, and will quantize digital signal by polychrome graphics display adaptive 4 and be converted to red, green, blue three look analog signal transmission are given VGA colour picture monitor 5, VGA colour picture monitor 5 is red according to this as display terminal, green, blue three look simulating signals realize trichromatic mixed light, thereby produce the white field of different-colour.
White instrument subject matter of this adjustable color temperature is: this white instrument is to deliver with the form of paper, and version is principle, does not have instrumentation.Should adopt computing machine VGA color monitor not high by a white instrument, and scintillation was arranged as a white output device homogeneity and stability.No detection system can not show the current output intrinsic brilliance parameter of field in vain in real time.Adopt computer as control assembly, realize that by being installed on special software on the computing machine colour temperature regulates, software and hardware separates, and level of integrated system is low, is not easy to use and transmit as working stamndard, and needs the additional configuration computer, the system cost height.
Summary of the invention
In order to overcome the defective that prior art exists, the objective of the invention is to realize the instrumentation of white instrument, improve the homogeneity and stability of white of white instrument output, increase measurement and Presentation Function current output light field luminance parameter, improve the integrated level of a white instrument, the lowering apparatus cost.
The technical problem to be solved in the present invention is: provide white adjustable instrument of a kind of colour temperature.The technical scheme of technical solution problem such as Fig. 2, Fig. 3, shown in Figure 4: comprise LCDs 6, photodetector 7, digital indicator 8, pattern load module 9, central processing module 10, display screen driver module 11, power module 12, cabinet 13.Wherein, central processing module 10 comprises processor 14, modulus (A/D) converter 15 and digital-to-analogue (D/A) converter 16.
Principle of work explanation: the present invention is based on Red Green Blue light and mix the principle that generates white field, with Red Green Blue light digital quantization is 256 grades, light by the three kinds of different brackets of red, green, blue after quantizing mixes white that obtains different-colour, and realizes real-time regulated.Central processing module as Fig. 4, is made up of processor, modulus (A/D) converter and digital-to-analogue (D/A) converter.Central processing module is according to the display screen control signal of pattern load module input, with the pre-three primary colors quantized values that shows of display screen by inside modules processor and be solidificated in wherein control program, convert the output light field analog signal transmission to and give the display screen driver module.The display screen driver module is responsible for the display screen power supply, and drives LCDs according to white of quantification gradation realization red, green, blue three coloured light mixing generation according to the output light field simulating signal that obtains from central processing module.LCDs adopts cold-cathode tube backlight or LED as light source, has advantages such as brightness uniformity height, good stability, can effectively improve the quality of output light field.Photodetector is positioned at the display screen upper right side, measures the luminance parameter of white of display screen output in real time, and the display screen light signal of measuring is converted into the analog electrical signal relevant with brightness of display screen is transferred to central processing module; Central processing module obtains the current display screen output brightness number of field in vain by analog to digital converter, the processor of inside modules and the control program that is solidificated in wherein, and this numerical value is transferred to digital indicator; Digital indicator will be exported in real time from the current light field monochrome information that central processing module obtains.The pattern load module comprises mode key, numerical value increase and decrease button and numerical value display; Mode key is used for the selection of white instrument display screen output mode, can produce various mode instructions, and be transferred to central processing module, by the output light field of central processing module and display screen driver module control display screen generation required mode, continuity point blow mode button can produce predefined light field patterns such as standard white field, standard three primary colors field successively; Numerical value increase and decrease button is used to be provided with the quantification gradation of light field, and give central processing module with the increase and decrease information transmission of quantification gradation respectively, change the quantification gradation of output light field by central processing module and display screen driver module control display screen, realize different light field output, click the continuous increase and decrease that numerical value increase and decrease button can be realized the light field quantification gradation continuously; The numerical value display shows the quantification gradation of current light field, is convenient to the user and adjusts in real time.Power module is converted to direct current with 220V, the 50Hz alternating current of outside input, is central processing module and the power supply of display screen driver module by lead.
Good effect of the present invention: the instrumentation of having realized the white instrument of adjustable color temperature, adopt LCDs can effectively improve the homogeneity and stability of white of white instrument output, by real-time monitoring sampled measurements and show the luminance parameter of current output light field, be convenient to the real-time regulated of instrumental calibration, correction and use, instrument control and regulate all by hardware and be solidificated in wherein program realization, improve the integrated level of a white instrument, conveniently use and transmit, and the lowering apparatus cost.After an instrument and national standard were traced to the source in vain, the standard of can be used as was used and transmission of quantity value.
Description of drawings
Fig. 1 is the prior art principle schematic;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a principle of compositionality synoptic diagram of the present invention;
Fig. 4 is a central processing module principle of compositionality synoptic diagram of the present invention.
Embodiment
The present invention presses Fig. 2 structure and Fig. 3, Fig. 4 principle of compositionality are implemented.Wherein LCDs 6 adopts the technical grade LCDs, LCDs uses cold-cathode tube backlight or LED as light source, have advantages such as brightness uniformity height, good stability, can effectively improve the quality of output light field, after demarcating, have good repeatability and time stability simultaneously.The plasma panel of the also available high uniformity of this LCDs, stability substitutes.Photodetector 7 adopts the high sensitivity photoelectric cell as measuring sensor, the light signal that measures is converted to the analog electrical signal relevant with light field brightness, has very high resolution, can effectively improve the precision of brightness measurement, the electric signal of photoelectric cell output a little less than, can in photodetector 7, dispose amplifying circuit and be transferred to central processing module 10 after to this signal amplification; Photoelectric cell can carry out brightness before use to be demarcated, and guarantees the accuracy of brightness measurement.Digital indicator 8 can adopt the common cathode charactron to realize brightness number output.Pattern load module 9 comprises that mode key, numerical value increase button, numerical value subtracts button and numerical value display, mode key, numerical value increase button, numerical value subtracts button and can adopt the contact button, click can produce the continuous impulse signal continuously, and the numerical value display can adopt the common cathode charactron to show the quantification gradation of current light field in real time.Central processing module 10 comprises processor 14, modulus (A/D) converter 15 and digital-to-analogue (D/A) converter 16; Processor 14 can adopt FPGA to constitute, and generates 3 tunnel 8 chrominance signals; Modulus (A/D) converter 15 can adopt 12 gradual approaching A/D converters (AD7472) to constitute, and the analog voltage signal that detector 2 is obtained is converted to 12 position digital signals, and shows output for digital indicator 8 this digital data transmission; Digital-to-analogue (D/A) converter 16 adopts 3 tunnel 10 D/A converters (ADV7123) to constitute, and is responsible for 3 way word vision signals are converted to 3 road analog video signals, and 3 road analog video signals are transferred to the display screen driver module.Display screen driver module 11 can adopt single-chip microcomputer as processor, receives 3 road analog video signals, and is converted to 10 road LVDS digital video signals, drives liquid crystal display, can adjust settings such as liquid crystal display brightness, contrast, horizontal level, upright position.Cabinet 13 can adopt the manufacturing of aluminum alloy plate materials panel beating moulding process, alleviates instruments weight, and sidewall can be provided with reinforcement increases cabinet intensity, improves the instrument impact resistance.Power module 12 can adopt D.C. regulated power supply, and output voltage is 5V or 12V.
Claims (1)
1. white the instrument that colour temperature is adjustable is characterized in that comprising LCDs (6), photodetector (7), digital indicator (8), pattern load module (9), central processing module (10), display screen driver module (11), power module (12), cabinet (13); Wherein, central processing module (10) comprises processor (14), modulus (A/D) converter (15) and digital-to-analogue (D/A) converter (16); LCDs (6) is embedded in cabinet (13) front window, is fastenedly connected by screw and cabinet (13) in cabinet (13) inside; Photodetector (7) is fixed in cabinet (13) upper right corner by screw, and the probe perpendicular alignmnet LCDs (6) of photodetector (7); Digital indicator (8) is embedded in cabinet (13) upper surface and takes in the rectangle fluting at position, fixedlys connected with cabinet (13) by screw in that cabinet (13) is inner; Pattern load module (9) is embedded in cabinet (13) top and takes back in the rectangle fluting at position, fixedlys connected with cabinet (13) by screw in that cabinet (13) is inner; Central processing module (10) is installed on cabinet (13) inside, is fixed in cabinet (13) top inner surface by screw; Display screen driver module (11) is installed on cabinet (13) inside, is fixed in the take back inside surface at position of cabinet (13) bottom by screw; Power module (12) is installed on cabinet (13) inside, is fixed in the take over inside surface at position of cabinet (13) bottom by screw; In cabinet (13) inside, central processing module (10) is connected with photodetector (7), digital indicator (8), pattern load module (9), display screen driver module (11) respectively by data line; LCDs (6) is connected with display screen driver module (11) with lead by data line; Central processing module (10), display screen driver module (11) are connected with power module (12) by lead respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010541145 CN102042875A (en) | 2010-11-12 | 2010-11-12 | White field instrument with adjustable color temperature |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010541145 CN102042875A (en) | 2010-11-12 | 2010-11-12 | White field instrument with adjustable color temperature |
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| CN102042875A true CN102042875A (en) | 2011-05-04 |
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| CN 201010541145 Pending CN102042875A (en) | 2010-11-12 | 2010-11-12 | White field instrument with adjustable color temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291556A (en) * | 2020-10-10 | 2021-01-29 | 深圳市金锐显数码科技有限公司 | Color temperature debugging method and device, terminal equipment and readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512961A (en) * | 1993-03-24 | 1996-04-30 | Apple Computer, Inc. | Method and system of achieving accurate white point setting of a CRT display |
| CN1753508A (en) * | 2005-10-13 | 2006-03-29 | 浙江大学 | Constitiution method and device used for flat plate TV light and colour automatic regulating and testing system |
-
2010
- 2010-11-12 CN CN 201010541145 patent/CN102042875A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512961A (en) * | 1993-03-24 | 1996-04-30 | Apple Computer, Inc. | Method and system of achieving accurate white point setting of a CRT display |
| CN1753508A (en) * | 2005-10-13 | 2006-03-29 | 浙江大学 | Constitiution method and device used for flat plate TV light and colour automatic regulating and testing system |
Non-Patent Citations (2)
| Title |
|---|
| 《光电技术》 19931231 赵勤尧等 电脑可调色温白场仪 第11-14页 1 第34卷, 第1期 2 * |
| 《浙江大学硕士学位论文》 20061231 杨珏 显示器标准白场建立研究 第1.2,2.3,2.7,3.3,4.6,5.3节 1 , 1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112291556A (en) * | 2020-10-10 | 2021-01-29 | 深圳市金锐显数码科技有限公司 | Color temperature debugging method and device, terminal equipment and readable storage medium |
| CN112291556B (en) * | 2020-10-10 | 2022-10-18 | 深圳市金锐显数码科技有限公司 | Color temperature debugging method and device, terminal equipment and readable storage medium |
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Application publication date: 20110504 |